You could see if you can get last minute tickets to Harry Potter and the Cursed Child. If you turn up at the box office about 2 hours before the afternoon show they sometimes have some cheap last minute tickets available.

I only went on the London Eye once on a work outing when I was living/working in London for a few months. It was fantastic as we had our own company pod and several waitresses serving us Champagne for the entire time.

Lagamorph wrote:Ripleys in London is utter gooseberry fool and a complete ripoff for the price of entry, don't do it.

I've never actually been. Discount that recommendation from me, I was just throwing up family activities that I've heard of in London. Everything is over priced there really. Although the joint merlin tickets makes their attractions seem a bit better value.

I know someone said no to Ripley's believe it or not, but my gf loved that place. She used to take students there and they all really liked it. Science Museum is cool too. I don't like the NHM as it's very out of date.

Obviously London is home to amazing food, but not sure a kid would appreciate it, so maybe go to Street Feast etc. Loads of options in a nice environment.

Go on Time Out London site and see what events are upcoming too as there is always something to go to.